Magnifying glasses have a wide range of applications in daily life and scientific research. In the field of education, teachers often use magnifying glasses to showcase the wonders of the microscopic world, such as biological and mineral samples, in order to stimulate students' interest and curiosity in learning. In scientific research, a magnifying glass is also one of the important tools, which can help scientists observe and analyze microstructures, and reveal the mysteries of nature.

As an important teaching tool, magnifying glasses play an important role in education and scientific research. Through a magnifying glass, students can intuitively observe various microscopic phenomena and details, thereby stimulating their interest and curiosity in science. Meanwhile, magnifying glasses also provide scientists with a tool to observe and study the microscopic world, helping them reveal many unknown mysteries in nature.

Long term use of magnifying glasses under strong light may cause damage to the eyes. Therefore, when using, it is important to avoid direct sunlight or other strong light sources on the eyes. A magnifying glass is a precision optical instrument that needs to be properly stored to avoid damage or loss. Avoid adverse factors such as moisture, heat, or pressure during storage.

Magnifier, also known as convex lens, its amplification function is based on the principle of light refraction. When light passes through a convex lens from air, refraction occurs, causing the light to focus towards the center of the convex lens. Therefore, when we place an object within the focal length of the magnifying glass, the light emitted by the object is refracted by the convex lens, forming a magnified virtual image on the other side of the magnifying glass. This is the basic principle that magnifying glasses can magnify objects.